Ji Yong and Soo Sun who are from the same school are half-friend, half-enemy.

Pan Seok hopes that Ji Yong’s mother can be a witness in the case. He guarantees her safety.

Ji Yong’s mother risks her life to save Ji Yong.

Ji Yong holds a grudge against Pan Seok as he thinks that Pan Seok is in cahoots with Killer Boots and did not keep his promise to protect his mother. He changes his name to Dae Gu.

They report to work as rookie detectives with different but unbefitting motives.

The rookies eavesdrop on whether they can continue working and heard that Pan Seok decides to give them a chance.

Although Dae Gu is skeptical about finding the gum wrapper in the pile of rubbish, they end up finding it and bringing it back after a nasty fight.

They finally get a chance to work on a case in pairs. A woman that they promise to help catch his stalker is stabbed. Soo Sun and Dae Gu are overcome with guilt.

Dae Gu feels that Pan Seok has no right to criticise them and starts a fight before leaving.

Dae Gu returns after imaginary mother helps him sort out his thoughts but is bind to Soo Sun (because of Tae II).

Dae Gu, Ji Gook, Tae II, Soo Sun are held hostage at a restaurant with some high school girls. Dae Gu and Soo Sun pretend they are a couple as they cannot hold their hands up to surrender (bind with handcuff) or their identity as police will be known.